public static SpriteAnimation parseFrom(StreamReader input, SpriteSheetCollection spriteSheets)
{
if (input == null || spriteSheets == null)
{
return(null);
}
SpriteAnimation animation;
VariableSystem animationProperties = new VariableSystem();
// store all of the animation properties
String data;
Variable property;
do
{
data = input.ReadLine();
if (data == null)
{
return(null);
}
data = data.Trim();
if (data.Length == 0)
{
continue;
}
property = Variable.parseFrom(data);
if (property == null)
{
return(null);
}
animationProperties.add(property);
} while(animationProperties.size() < 7);
// parse the animation name
String animationName = animationProperties.getValue("Animation Name");
if (animationName == null)
{
return(null);
}
// parse the animation type
SpriteAnimationType animationType = parseType(animationProperties.getValue("Animation Type"));
if (animationType == SpriteAnimationType.Invalid)
{
return(null);
}
// parse the duration of the animation
float duration;
try {
duration = float.Parse(animationProperties.getValue("Animation Duration"));
}
catch (Exception) { return(null); }
if (duration <= 0)
{
return(null);
}
// parse the number of frames in the animation
int numberOfFrames;
try {
numberOfFrames = int.Parse(animationProperties.getValue("Number of Frames"));
}
catch (Exception) { return(null); }
if (numberOfFrames <= 0)
{
return(null);
}
// get the sprite sheet name
String spriteSheetName = animationProperties.getValue("SpriteSheet Name");
if (spriteSheetName == null)
{
return(null);
}
// get the sprite name
String spriteName = animationProperties.getValue("Sprite Name");
if (spriteName == null)
{
return(null);
}
string startIndex = animationProperties.getValue("Start Index");
int iStartIndex = 1;
if (startIndex != null)
{
iStartIndex = int.Parse(startIndex);
}
animation = new SpriteAnimation(animationName, duration, animationType);
// get the sprite sheet which contains the animation
SpriteSheet spriteSheet = spriteSheets.getSpriteSheet(spriteSheetName);
if (spriteSheet == null)
{
return(null);
}
// obtain and add the sprites to the sprite animation
Sprite sprite;
for (int i = 0; i < numberOfFrames; i++)
{
sprite = spriteSheet.getSprite(spriteName + " " + (i + iStartIndex));
if (sprite == null)
{
return(null);
}
animation.addSprite(sprite);
}
return(animation);
}
